Boise, ID
Long-term air quality
What this page tells you
This page combines annual PM2.5, unhealthy days, 5-year trend, and data coverage so you can compare long-term air quality, not just today's reading.
Boise, ID air quality summary: Boise, ID, has a clean air score of 37.6 and an F grade, with an annual PM2.5 mean of 9.7. These metrics reflect significant long-term air quality challenges for the area, often influenced by regional atmospheric conditions. The annual PM2.5 mean in Boise is 9.7, which is considered moderate or acceptable but still relevant for long-term exposure. Long-term air quality in Boise has been worsening over recent years.
Clean Air Score
A clean air score of 37.6 and an F grade indicate that long-term air quality in Boise is frequently below national environmental standards. This suggests that residents experience periods of elevated particulate levels compared to many other residential regions.
🏡 What This Means for Buying
Air quality is a significant factor to include in any long-term housing or relocation evaluation in Boise. Prospective residents should weigh these environmental metrics as part of a comprehensive assessment of the local living conditions.
Indoor Air Quality in Boise, ID
Outdoor pollution can still affect indoor air when windows are open, filtration is weak, or wildfire smoke moves in.
How to react when today's AQI changes
Use the AQI bands below to decide whether to open windows, run an air purifier, or stay indoors when pollution spikes in Boise.
AQI 0-50
GoodOpen windows: Open windows if you want fresh air.
Air purifier: No purifier needed for most homes.
Indoor activity: Normal indoor activity is fine.
AQI 51-100
ModerateOpen windows: Sensitive groups should limit open-window time.
Air purifier: Use fans or filtration if dust or pollen is bothering you.
Indoor activity: Most people can stay active indoors.
AQI 101-150
Unhealthy for Sensitive GroupsOpen windows: Keep windows closed.
Air purifier: Run a HEPA purifier in the main room and bedroom.
Indoor activity: Sensitive groups should reduce outdoor exposure.
AQI 151+
UnhealthyOpen windows: Keep windows and doors closed.
Air purifier: Run HEPA continuously and seal obvious drafts.
Indoor activity: Stay indoors as much as possible; use an N95 if you must go out.
Common indoor air concerns in Boise:
- Seasonal pollen and dust mite allergens
- VOCs from household products
Recommended action: If today's AQI reaches 101 or higher, close windows and run HEPA filtration before indoor air starts to feel smoky or stale.
Top Products for Boise Homes:
🩺 My Health Risk Assessment
See how Boise's air quality affects you and your family specifically.
Health Advice
Reduce prolonged outdoor exertion.
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</> Create Free Widget🏡 Property Value Impact Analysis
Between 2019 and 2024, Boise's air quality worsened by 2.8 μg/m³. Based on NBER studies, this change correlates with a estimated 11.2% decrease in relative property value retention.
Cleaner Alternatives in ID
No cleaner cities found in this state. Boise is already a top performer!
Why Boise earned a 37.6
Raw inputs, scoring weights, and data coverage for this city.
Best Time to Run
Find the cleanest hours for your run today.
Cycling Forecast
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📅 Past 30 Days Trend
Real-time daily PM2.5 AQI
🌸 Pollen Outlook
Current Seasonal Forecast
How it worksBased on current seasonal forecast data. Not a long-term pollution rating or relocation score.
Score Breakdown
| Component | Weight | Score Contribution |
|---|---|---|
| Annual Air Quality | 40% | 32.7 |
| Unhealthy Days | 25% | 17.4 |
| 5-Year Trend | 20% | 36 |
| Seasonal Variability | 10% | 64.3 |
| Extreme Events | 5% | 75 |
Explore More Air Quality Data
Frequently Asked Questions
About This Data
Data Sources
Historical air quality mapping and scoring are based completely on official U.S. Environmental Protection Agency (EPA) AirNow API data. 5-day AQI forecasts are provided by WAQI.
Methodology
Our Clean Air Score (0-100) is a proprietary algorithm that weighs multiple factors:
- Annual PM2.5 averages (40%)
- Frequency of unhealthy days (25%)
- 5-year pollution trends (20%)
- Seasonal variability and extreme events (15%)
Updates & Accuracy
Real-time data is updated hourly. Historical aggregate scores are recalculated monthly to reflect the latest trends. While we strive for accuracy, sensor maintenance and local conditions can affect individual readings.
Practical Advice
When AQI > 100: Sensitive groups (children, elderly, asthmatics) should limit prolonged outdoor exertion.
When AQI > 150: Everyone should avoid outdoor exercise and keep windows closed.
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Boise Air Quality FAQs
Is Boise a good fit for people who care about long-term air quality?
Boise holds a clean air score of 37.6 and an F grade, with an annual PM2.5 mean of 9.7. These figures indicate that air quality is a significant factor for individuals who prioritize low pollution exposure.
How frequent is unhealthy air or long-term pollution exposure in Boise?
Boise experiences unhealthy air days approximately 4.1% of the time. This frequency, in combination with its F grade, indicates a level of acute pollution spikes that is relevant for long-term health awareness.
Is air quality in Boise improving or getting worse over time?
The air quality trend in Boise is currently worsening. This indicates that long-term particulate concentrations have shown an upward trajectory during the monitored period.
Does air quality vary across different parts of Boise?
Air quality can vary within Boise due to local factors such as elevation, valley geography, and traffic density. Residents may experience different air quality conditions in the foothills compared to the valley floor during periods of atmospheric inversion.